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Equine Immunoglobulin and Equine Neutralizing F(ab')₂ Protect Mice from West Nile Virus Infection
Journal article   Open access   Peer reviewed

Equine Immunoglobulin and Equine Neutralizing F(ab')₂ Protect Mice from West Nile Virus Infection

Jiannan Cui, Yongkun Zhao, Hualei Wang, Boning Qiu, Zengguo Cao, Qian Li, Yanbo Zhang, Feihu Yan, Hongli Jin, Tiecheng Wang, …
Viruses, Vol.8(12), pp.332-332
12/18/2016
DOI: 10.3390/v8120332
PMCID: PMC5192393
PMID: 27999340
url
https://doi.org/10.3390/v8120332View
Published (Version of record) Open Access

Abstract

West Nile virus (WNV) is prevalent in Africa, Europe, the Middle East, West Asia, and North America, and causes epidemic encephalitis. To date, no effective therapy for WNV infection has been developed; therefore, there is urgent need to find an efficient method to prevent WNV disease. In this study, we prepared and evaluated the protective efficacy of immune serum IgG and pepsin-digested F(ab')₂ fragments from horses immunized with the WNV virus-like particles (VLP) expressing the WNV M and E proteins. Immune equine F(ab')₂ fragments and immune horse sera efficiently neutralized WNV infection in tissue culture. The passive transfer of equine immune antibodies significantly accelerated the virus clearance in the spleens and brains of WNV infected mice, and reduced mortality. Thus, equine immunoglobulin or equine neutralizing F(ab')₂ passive immunotherapy is a potential strategy for the prophylactic or therapeutic treatment of patients infected with WNV.
Spleen - virology Antibodies, Neutralizing - administration & dosage Immunization, Passive - methods West Nile virus - immunology Immunologic Factors - administration & dosage Brain - virology Treatment Outcome West Nile Fever - prevention & control Immunoglobulin Fab Fragments - administration & dosage Animals Horses Mice West Nile virus - isolation & purification Antibodies, Viral - administration & dosage Disease Models, Animal

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